Centrifugal machine



-Jun 29,1926.

- 1,591,004 0. A. OLCOTT GENTRIFUGAL .Mhcgms Filed June 5, 1925 INVENTOR HHRLgS 4. OLCOT r i q f i CHARLES A. OLCOTT, or-nnw YORKQN Y s est -mf s. nn'rwon'rn oo vrrANY,

- chin-es, I

driers. The-object of my invention is to or NEW oamn. Y., a coarona'rron on NEW xonx.

onnrnrrnsan MACHINE. t 1

-Applicationfiled; June 3, 1925. Serial No..4,642.

My 7 invention relates to. v centrifugal maand particularly to centrifugal prevent discharged fluid from being carried up and out of the centrifugalcasing by the air current which escapes from the area between the basket and casing during the operation of the machine.

In the accompanying drawings basket and casing of a centrifugal to which my invention is applied in one form ;'and

' cover.

When operating a sugar, the sugar-carrying'molasses which is fed into the centrifugal basket-3 on driving shaft-4, discharges through the perforations 5 in thewall 6 of the basket. Sur-f rounding the basketeis the usual stationary r casing 7,- against which the molasses ini pinges, and downthe walls of which-it tends to flow. An annular cover 8 is commonly provided at. the top .of the casingtoj prevent spatter, as well as to guard the attendant. When thebasket is in operation, an air current is establishedwhich flows fromthe space 9v between the basket and the casing 7 both upward and downward; escaping being, and upward through the central opening in the cover 8. A certain'whirling mo tion is imparted to the air current by the rotation of the basket. This upwardly flow ing and whirling current of air, causes some a a casing for the centrifugalbasket an inward? 1y extending annular cover 'for the casing, V

eration may be avoided by providing the inner surface of the cover with ribs 11 which not only baflie-the whirling air current at this point, but also form guides along which Y the liquid'is caused to travel outward to f ward the casing 7 by the air current which,

in the first instance,'fdrags it upward and i inward. 7 Preferably the ribs 11 extend the entire width of the cover and are arranged on a curve traversing the whirl of the air Fig. '1 isa broken side elevation of the suspension by the air current, they arcade- Fig. 2 is an inverted plan. of the casing a centrifugal for drying results.

wardly extending annular cover forthe we; ,ing, and 'means o'n the 1111161 face of the cover causing outward flowof liquid enthe air current which flows upward within 7 flows upward current. but extending in the same general kept away from the inner lip '10. ,If'any particles of liquid arejcarried upward in the ribs 11 tendto bafllethe air currentitself; ,and to deflect porticn' of it and-to set up eddies which arrest its upward flow and its whirling niotionythus reducing the celerity 7' of the current as it passes the lip 10 of the cover.

Various modifications in the form-of the ribs 11 may be made. Straight ribs may be employed, or interrupted ratherthan con tinuous ribs, but I have found: the curved uninterrupted ribs to give jinost satisfactory;

' Ijclaiin as my'invention- 7 w V 1. Inacentr'ifuga'l machine, a stationary casing for the centrifugal; basket, an fintrained by the current of air escaping at the inner margin ofthe cover during the opera- 7 7 tion ofthefmachine, Y a 4 ec 2. Ina centrifugal machine, a stationary rib means on the'inner surface of the cover-- for directing outward liquid entrained by the casing and inward to "the inner margin f'the cover. duringfjtheoperationiof t ma'chine a 3. In a centrifugal machine, a stationary casing surrounding a centrifugal basket, an

inwardly extending iannular cover 'for the 1- casing, and curved ribs on the inner surface 7 of the cover for causing the outward flow-of liquid entrained by v the air current, which within the casing and in m 7 to the inner margin of the cover during the the outer portion of the cover'in the general operation of the machine. direction of, but traversing the course of,

s 4, In a centrifugal machine, a stationary the air currrent set up by the operation of 10 casing for the centrifugal basket, an inthe machine. 7

Wardly extending annular cover for the cas In testimony whereof I have signed my ing, and ,ribson the inner faceot the cover, name 110 thiss pecifieation.

said ribs extending from the inner toward i 

